Mathematical posts.
Good old days.
Technical posts.
Short expository notes to capture insights.
Rambling words.
Solutions to specific problems.
Atiyah–Macdonald affairs.
The geometry of the nilpotent cone in Lie algebras
有限群表示论，Peter–Weyl 分解，对称群表示论和 Schur–Weyl 对偶．
All posts on this site.
All posts on this site, including drafts.
Drafts WIP and shelved writings.
